CN109383245B

CN109383245B - vehicle door structure

Info

Publication number: CN109383245B
Application number: CN201810689264.0A
Authority: CN
Inventors: 金杉英明; 宫本吉贵
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2017-08-09
Filing date: 2018-06-28
Publication date: 2021-10-22
Anticipated expiration: 2038-06-28
Also published as: JP2019031231A; CN109383245A; JP6859895B2; US10525800B2; US20190047386A1

Abstract

The present invention relates to a vehicle door structure. However, the cabin inner vertical wall portion of the door inner panel is constituted by only the first panel member. In addition, the extension wall portion extending from the end portion of the cabin inner vertical wall portion toward the door outer panel side is configured such that the lower portion of the front side vertical wall portion, which is a part thereof, is divided in the door thickness direction, and the first panel The first extension of the member and the second extension of the second panel member are joined together in an overlapping state.

Description

Door structure for vehicle

Technical Field

The present disclosure relates to a door structure for a vehicle.

Background

There is known a vehicle door made of an aluminum alloy for opening and closing a door opening portion of a vehicle side portion. For example, refer to Japanese patent application laid-open Nos. 2006-176107, 2009-126359, and 2004-122874. Japanese patent application laid-open No. 2006-176107 discloses a technology relating to a vehicle slide door configured to include an inner panel and an outer panel each made of aluminum (aluminum alloy).

However, the aluminum alloy material is inferior to steel in formability in extrusion molding. Therefore, when the inner panel is formed of one sheet of the aluminum alloy plate by extrusion molding, the angle of the obtuse-angle-shaped bent portion between the vehicle interior side vertical wall portion constituting the door inner surface and the extended wall portion extending from the end portion of the vehicle interior side vertical wall portion to be bent toward the door outer side (outer panel side) in the inner panel becomes large. However, when the angle of the obtuse-angle-shaped bent portion between the vehicle interior side vertical wall portion and the extended wall portion is large, if the peripheral edge portion side of the door opening portion is inclined more largely toward the vehicle width direction inner side and toward the side where the door opening portion is reduced in accordance with this angle, the door opening portion is reduced in size in accordance with the amount.

On the other hand, japanese patent application laid-open No. 2009-126359 discloses a technique in which an aluminum alloy inner panel is divided into four sections, front, rear, upper, and lower. In this structure, the angle of the bent portion between the portion corresponding to the vehicle interior side vertical wall portion and the portion corresponding to the extended wall portion can be set to the same angle as in the case of the steel inner panel, but the portion corresponding to the vehicle interior side vertical wall portion cannot be formed by a single member.

Disclosure of Invention

In view of the above, the present disclosure provides a vehicle door structure in which the angle of the bent portion between the cabin inner side vertical wall portion and the extended wall portion of the aluminum alloy door inner panel is set to an angle equivalent to that in the case of steel, thereby enabling a setting of suppressing reduction of the door opening portion at the vehicle side portion, and the cabin inner side vertical wall portion of the door inner panel can be configured by a single member.

A first aspect of the present disclosure is a door structure for a vehicle, including: a door outer panel disposed on an outside of a vehicle compartment on a door that opens and closes a door opening on a side of the vehicle; a door inner panel including a vehicle interior side longitudinal wall portion that is disposed on a vehicle interior side of the door outer panel and forms a main body portion of the door together with the door outer panel, the vehicle interior side longitudinal wall portion constituting a door inner surface, and an extension wall portion that extends from an end portion of the vehicle interior side longitudinal wall portion toward the door outer panel side, the door inner panel being made of an aluminum alloy, the vehicle interior side longitudinal wall portion being formed of only a first panel member, the extension wall portion being formed so that at least a portion thereof is divided in a door thickness direction, and a first extension portion that is bent and extends from the end portion of the vehicle interior side longitudinal wall portion of the first panel member toward the door outer panel side and a second extension portion that is formed of a second panel member that is a member separate from the first panel member and is provided at the at least a portion thereof The door outer panel side of the center.

According to the first aspect, the door opening portion of the vehicle side portion is opened and closed by the door by forming the main body portion of the door by the door outer panel disposed on the vehicle compartment outer side and the door inner panel disposed on the vehicle compartment inner side of the door outer panel. The door inner panel is made of an aluminum alloy, and a vehicle interior side longitudinal wall portion constituting a vehicle door inner surface is constituted only by the first panel member, and an extension wall portion extends from an end portion of the vehicle interior side longitudinal wall portion toward the door outer panel side. Here, at least a part of the extended wall portion is divided in the door thickness direction, and is constituted by a first extended portion of the first panel member and a second extended portion of the second panel member. The first extending portion is a portion of the first panel member extending while being bent from the end portion of the vehicle interior side vertical wall portion toward the door outer panel side, and the second extending portion is provided on the door outer panel side of the at least a portion and is joined to the first extending portion in a state of being overlapped therewith. Therefore, even if the vehicle interior side vertical wall portion is constituted only by the first panel member, the depth of compression of the first panel member can be made appropriately shallow by compression-molding the first panel member before joining the first panel member and the second panel member. As a result, the angle of the bent portion between the vehicle interior side vertical wall portion and the extended wall portion can be set to an angle equivalent to that in the case of the steel door inner panel.

A second aspect of the present disclosure is the sliding door in the first aspect, wherein the door is configured to open the door opening portion by moving to a vehicle rear side, and a joint portion between the first extending portion and the second extending portion is set in a front-side vertical wall portion of the extending wall portion that is disposed on a vehicle front side and extends in a door vertical direction.

According to the second aspect, the door is a sliding door that opens the door opening by moving toward the vehicle rear side, and the joint portion between the first extending portion and the second extending portion is set in the front-side vertical wall portion that is provided on the vehicle front side of the extending wall portion and extends in the door vertical direction. Therefore, if the first panel member is press-molded before the first panel member and the second panel member are joined, the angle of the bent portion between the vehicle interior side vertical wall portion and the front side vertical wall portion can be set to an angle equivalent to that in the case of the steel door inner panel. Further, by setting the angle of the bent portion between the vehicle interior side vertical wall portion and the front side vertical wall portion to an angle equivalent to that in the case of the steel door inner panel and setting the vehicle front side vertical wall portion constituting the door opening portion in correspondence with this, it is possible to reduce the difference between the amount of movement of the slide door in the vehicle front-rear direction and the length of the slide door from the edge portion of the vehicle front side of the door opening portion to the end portion of the vehicle front side of the slide door in the vehicle front-rear direction when the slide door is moved to the vehicle rear side to open the door. That is, the opening amount of the getting on/off section can be effectively secured in the case of opening the slide door.

A third aspect of the present disclosure is the second aspect, wherein a weather strip is attached to an entire circumference of a peripheral end edge of the door opening, and the vehicle door structure is configured such that the weather strip is pressed against an entire circumference of a peripheral end portion side of the cabin inner side longitudinal wall portion in a state where the sliding door closes the door opening.

According to the third aspect, the weather strip is attached to the entire periphery of the peripheral end edge of the door opening, and the weather strip is pressed against the entire periphery of the peripheral end portion side of the vehicle interior side vertical wall portion when the sliding door closes the door opening. Here, since the vehicle interior side vertical wall portion is not a divided structure but is constituted only by the first panel member, when the sliding door closes the door opening portion, the gap between the weather strip and the vehicle interior side vertical wall portion can be suppressed satisfactorily over the entire circumference. As a result, for example, the NV performance (noise and vibration performance) can be improved as compared with a comparative structure in which the vehicle interior side vertical wall portion is divided.

A fourth aspect of the present disclosure is the first to third aspects, wherein the second extending portion is provided on at least one end portion side of the extending wall portion in the vehicle front-rear direction and extends in the door vertical direction, and the first extending portion is joined to an outer surface side of the second extending portion in an overlapping state with respect to the second extending portion.

In addition, the fourth aspect of the present invention is such that the second extending portion is provided on the vehicle front-rear direction front end portion side of the extending wall portion, and the second extending portion is provided on the vehicle front-rear direction rear end portion side of the extending wall portion, and the second extending portion is provided on the vehicle front-rear direction rear end portion side of the extending wall portion.

According to the fourth aspect, when the vehicle longitudinal direction intermediate portion of the door collides with a columnar object such as a utility pole or a tree, for example, the vehicle longitudinal direction intermediate portion of the vehicle interior side longitudinal wall portion of the first panel member is pressed toward the vehicle interior side. Thus, when the vehicle interior side vertical wall portion of the first panel member is deformed so as to be bent substantially in a V shape in a plan view of the vehicle, the first extending portion of the first panel member coupled to the outer surface side of the second extending portion of the second panel member is displaced toward the vehicle interior side while pressing the second extending portion of the second panel member. Therefore, when the vehicle front-rear direction intermediate portion of the door collides with the rod-like object, the joint portion between the first extending portion and the second extending portion is less likely to peel off.

As described above, according to the vehicle door structure of the present disclosure, since the angle of the bent portion between the vehicle interior side vertical wall portion and the extended wall portion of the aluminum alloy door inner panel can be set to the same angle as that in the case of steel, the vehicle interior side vertical wall portion of the door inner panel can be configured by a single member while suppressing the reduction of the door opening portion at the vehicle side portion.

Drawings

Embodiments of the present disclosure are described in detail with reference to the following drawings.

Fig. 1 is a side view showing a part of a vehicle side portion including a vehicle door structure according to an embodiment of the present disclosure in a simplified manner. The outline of the front side of the sliding door in the closed state is indicated by a two-dot chain line.

Fig. 2 is an enlarged top sectional view showing the front end side of the sliding door and its peripheral portion in a closed state shown by a two-dot chain line in fig. 1 in an enlarged manner along the line 2-2 of fig. 1.

Fig. 3 is a perspective view showing a state in which the door inner panel of the door shown in fig. 1 is viewed obliquely from the front side on the inner surface side of the door.

Detailed Description

A vehicle door structure according to an embodiment of the present disclosure will be described with reference to fig. 1 to 3. Note that arrow FR shown appropriately IN these drawings indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow IN indicates the vehicle width direction inner side. Hereinafter, when only the front-rear direction, the up-down direction, and the left-right direction are used for description, the front-rear direction of the vehicle front-rear direction, the up-down direction of the vehicle up-down direction, and the left-right direction toward the vehicle front side are indicated unless otherwise specified.

Structure of the embodiment

Fig. 1 is a simplified side view of a part of a vehicle side portion 10 including a vehicle door structure according to the present embodiment. As shown in fig. 1, a roof side rail 12 is disposed at an upper portion of the vehicle side portion 10, and the roof side rail 12 extends in the vehicle front-rear direction. In contrast, the rocker 14 is disposed at the lower portion of the vehicle side portion 10, and the rocker 14 extends in the vehicle longitudinal direction. Further, a center pillar 16 is provided upright from a longitudinal direction intermediate portion of the rocker 14 toward the vehicle upper side, and an upper end portion of the center pillar 16 is connected to a longitudinal direction intermediate portion of the roof side rail 12. A rear pillar 18 is provided upright on the vehicle rear side of the center pillar 16 toward the vehicle upper side, and an upper end portion of the rear pillar 18 is connected to a rear end portion of the roof side rail 12.

The roof side rail 12, the rocker 14, the center pillar 16, and the rear pillar 18 are all of a closed cross-sectional structure, and constitute a vehicle body frame member. Further, a rear door opening 22, which is a door opening, is formed on the rear side of the vehicle side portion 10, and is surrounded by vehicle body frame members including the roof side rail 12, the center pillar 16, the rocker 14, and the rear pillar 18. In other words, the roof side rail 12 is disposed along the vehicle longitudinal direction on the upper edge side of the rear door opening 22, and the rocker 14 is disposed along the vehicle longitudinal direction on the lower edge side of the rear door opening 22. The center pillar 16 is disposed in the vehicle vertical direction on the front edge side of the rear door opening 22, and the rear pillar 18 is disposed in the vehicle vertical direction on the rear edge side of the rear door opening 22.

The rear door opening 22 communicates between the outside of the vehicle compartment and the inside of the vehicle compartment, and is opened and closed by a slide door 40 (details will be described later) as a door. In fig. 1, the outline of the front side of the slide door 40 in the closed state is indicated by a two-dot chain line. Although the front door opening 20 is formed on the front side of the vehicle side portion 10 on the vehicle front side of the rear door opening 22, a detailed description of the front door opening 20 is omitted here. A weather strip (also referred to as an "open weather strip") 24 is attached to the entire periphery of the peripheral end edge of the rear door opening portion 22.

Fig. 2 shows the front end side of the slide door 40 and its periphery in a closed state shown by a two-dot chain line in fig. 1, as an enlarged top sectional view taken along line 2-2 of fig. 1. In fig. 2, a member indicated by a reference numeral 38 at the upper left side in the drawing is a door for opening and closing the front door opening 20 (see fig. 1).

As shown in fig. 2, the center pillar 16 includes: a center pillar inner panel 32 disposed on the vehicle interior side; and a center pillar reinforcement 34 disposed on the vehicle cabin outer side of the center pillar inner panel 32. In the following description, the center pillar inner panel 32 is simply referred to as "center pillar inner 32", and the center pillar reinforcement 34 is simply referred to as "center pillar RF 34". Although fig. 2 illustrates only the portion of the center pillar 16 on the vehicle rear side, the portion of the center pillar 16 on the vehicle front side is configured to be substantially symmetrical with the portion of the center pillar 16 on the vehicle rear side in the front-rear direction.

The center pillar inner 32 is configured as a member that has irregularities in the vehicle width direction in a plan sectional view and extends in the vehicle front-rear direction as a whole. In contrast, the center pillar RF34 is formed in a substantially hat shape having an opening portion facing the vehicle width direction inner side in a plan sectional view. The front and rear flange portions of the center pillar RF34 are joined to the front and rear flange portions of the center pillar inner 32, whereby the frame portion 30 having a closed cross-sectional shape extending substantially in the vehicle vertical direction is formed.

A center pillar outer 36C, which is a part of the side outer panel 36, is disposed on the vehicle cabin outer side of the center pillar RF34, and constitutes a part of the center pillar 16. The center pillar outer 36C is formed in a substantially hat shape with an opening portion facing the vehicle width direction inner side in a plan sectional view, and the front and rear flange portions are joined to the center pillar inner 32 and the front and rear flange portions of the center pillar RF34, respectively. The center pillar 16 includes a pillar rear-side vertical wall portion 36R extending in the vehicle vertical direction and in the substantially vehicle width direction at a vehicle rear-side portion constituted by a part of the center pillar outer portion 36C.

Further, a weather strip 24 for sealing the rear door opening 22 is attached to the rear flange portion 16F of the center pillar 16 (the portion where the rear flange portions of the center pillar inner 32, the center pillar RF34, and the center pillar outer 36C overlap). The weather strip 24 is made of rubber, and includes an attachment base portion 24A and a seal portion 24B. The attachment base portion 24A of the weather strip 24 is attached to the peripheral end edge of the rear door opening 22 including the rear flange portion 16F of the center pillar 16. The seal portion 24B of the weather strip 24 is formed integrally with the attachment base portion 24A, and is disposed on the vehicle width direction outer side with respect to the peripheral end edge of the rear door opening 22 including the rear flange portion 16F of the center pillar 16. In the present embodiment, the seal portion 24B is configured to include, as an example, a first cylindrical portion 24B1 and a second cylindrical portion 24B2 that are aligned in the vehicle width direction. In addition, the shape of the weather strip 24 indicated by the two-dot chain line indicates the shape of the weather strip 24 in a state where the slide door 40 is opened.

The slide door 40 shown in fig. 1 is also known as a back door in the present embodiment. The slide door 40 is configured to open the rear door opening 22 by moving toward the vehicle rear side, and to close the rear door opening 22 by moving toward the vehicle front side from the state indicated by the solid line in fig. 1 (see the two-dot chain line in fig. 1). Further, since the structure for sliding the sliding door 40 is known, for example, from japanese patent application laid-open No. 2003-214015, etc., the illustration and the detailed description thereof are omitted. Although not shown, the slide door 40 includes a stopper pin for a door lock at a position on the vehicle front side, and a striker plate (not shown) that engages with the stopper pin is provided on the center pillar 16 in correspondence with this.

As shown in fig. 2, the slide door 40 includes a door body portion (body portion of the slide door 40) 40H including a door outer panel 42 and a door inner panel 44, the door outer panel 42 being disposed on the outside of the vehicle compartment and constituting a door outer panel, and the door inner panel 44 being disposed on the inside of the vehicle compartment of the door outer panel 42 and constituting a door inner panel. As shown in fig. 1, a window 40W in which a door glass is disposed is formed in an upper portion of the door body 40H. The door outer panel 42 and the door inner panel 44 shown in fig. 2 are made of aluminum alloy, and outer peripheral end portions thereof are joined together by hemming. In addition, a molding 41 is attached to a joint portion of the door outer panel 42 and the door inner panel 44.

The door inner panel 44 includes a vehicle interior side vertical wall portion 46 that extends in the vehicle front-rear direction and the vehicle vertical direction as a whole and constitutes a door inner surface. In a state where the slide door 40 shown in fig. 1 closes the rear door opening 22, the weather strip 24 is set to be pressed and attached to the entire periphery of the vehicle interior side vertical wall portion 46 shown in fig. 3 on the peripheral end portion side (see fig. 1 and 2). In fig. 3, a contacted portion to which the weather strip 24 (see fig. 1 and 2) is pressed when the door is closed is shown by a two-dot chain line 46X on the peripheral end portion side of the vehicle interior side vertical wall portion 46.

As shown in fig. 2, the door inner panel 44 includes an extended wall portion 48 extending from an end of the vehicle interior side vertical wall portion 46 toward the door outer panel 42. As shown in fig. 3, the extension wall portion 48 includes: a front-side vertical wall portion 48F that is disposed on the vehicle front side and extends in the door vertical direction; and a rear vertical wall portion 48R that is disposed on the vehicle rear side and extends in the door vertical direction. The extension wall portion 48 further includes: an upper lateral wall portion 48U that is disposed on the vehicle upper side and extends in the vehicle front-rear direction; and a lower lateral wall portion 48D that is disposed on the vehicle lower side and extends in the vehicle front-rear direction.

As shown in fig. 2, the front-side vertical wall portion 48F of the door inner panel 44 and the pillar rear-side vertical wall portion 36R of the center pillar 16 are set to be disposed substantially parallel to each other in the closed state of the slide door 40. In other words, the portion from the pillar rear-side vertical wall portion 36R to the rear flange portion 16F of the center pillar 16 is curved so as to correspond to the portion from the front-side vertical wall portion 48F to the front end portion of the vehicle interior-side vertical wall portion 46 of the closed slide door 40.

As shown in fig. 3, the door inner panel 44 includes a flange portion 49, and the flange portion 49 protrudes from the extended tip end of the extended wall portion 48 and extends outward of the door when viewed in the door thickness direction. The flange portion 49 includes: a front flange portion 49F that is disposed on the vehicle front side and extends toward the vehicle front side; and a rear flange 49R that is disposed on the vehicle rear side and extends toward the vehicle rear side. Further, the flange portion 49 includes: an upper flange portion 49U that is disposed on the vehicle upper side and extends toward the vehicle upper side; and a lower flange portion 49D that is disposed on the vehicle lower side and extends toward the vehicle lower side.

In the present embodiment, the door inner panel 44 is configured by two members, a first panel member 50 that constitutes most of the door inner panel 44 and a second panel member 52 that is a separate member from the first panel member 50. The cabin inner side vertical wall portion 46 is constituted only by the first panel member 50, and the extended wall portion 48 is constituted such that a part of the vehicle front side is divided in the door thickness direction, and a part of the first panel member 50 is joined to the second panel member 52. That is, the extended wall portion 48 is not a portion constituted by a single member, but a portion constituted by a divided structure.

The extended wall portion 48 includes a first extended portion 50A, and the first extended portion 50A is a portion that extends from an end portion of the cabin inner side vertical wall portion 46 of the first panel member 50 to be bent toward the door outer panel 42 (see fig. 1). A portion of the first extending portion 50A that constitutes the lower portion of the front-side vertical wall portion 48F is set to be a short extending portion 50S, and the extending amount of the short extending portion 50S is set to be shorter than the entire length of the lower portion of the front-side vertical wall portion 48F in the extending direction. The extended distal end position of the short extension portion 50S is set on the proximal end side in the extending direction of the front vertical wall portion 48F in a plan view of the door. The extended wall portion 48 includes a second extended portion 52A formed of a second panel member 52 and provided on the door outer panel 42 (see fig. 2) side at the lower portion of the front-side vertical wall portion 48F, and the extended wall portion 48 is formed such that the short extended portion 50S of the first extended portion 50A and the second extended portion 52A are joined together in an overlapping state. The second extension 52A extends from the joint portion 54 that is joined to the short extension 50S of the first extension 50A toward the door outer panel 42 (see fig. 2).

The short extension portion 50S and the second extension portion 52A of the first extension portion 50A are provided on the vehicle front-rear direction front end portion side of the extension wall portion 48, and extend in the door vertical direction. That is, in the present embodiment, the joint portion 54 between the short extension portion 50S of the first extension portion 50A and the second extension portion 52A is set on the front-side vertical wall portion 48F (more specifically, the lower portion of the front-side vertical wall portion 48F). Further, the lower end portion of the second extending portion 52A is joined to the end portion on the vehicle front side at the portion of the first extending portion 50A constituting the lower lateral wall portion 48D.

The lower portion of the front-side vertical wall portion 48F where the joint portion 54 of the short extending portion 50S and the second extending portion 52A is set (in other words, a split structure is adopted) is a portion where the length in the door thickness direction (vehicle width direction) is set to be longer in the front-side vertical wall portion 48F. The angle θ of the bent portion 56 between the vehicle interior side vertical wall portion 46 and the front side vertical wall portion 48F shown in fig. 2 is set to an angle relatively close to 90 ° (an angle exceeding 90 ° but smaller than 100 °, as an example) as in the case of a steel door inner panel, for example. In other words, the split structure of the short extension portion 50S and the second extension portion 52A is set in a portion where it is difficult to obtain a bending angle equivalent to that in the case of steel, assuming that the door inner panel made of aluminum alloy is formed of one member and deep extrusion molding is performed. The short extension portion 50S and the second extension portion 52A are joined together in a state of overlapping on the outer surface side of the second extension portion 52A (the vehicle front-rear direction front surface 52A1 side). The joint portion 54 of the short extension portion 50S and the second extension portion 52A is set at a position relatively close to an R-shaped bent portion 56 that is bent from the end portion of the cabin interior side vertical wall portion 46 toward the door outer panel 42.

Further, the vicinity of the vehicle width direction outer side of the short extended portion 50S on the second extended portion 52A is bent in a crank shape, and the front surface of the short extended portion 50S is aligned with the front surface of the portion on the vehicle width direction outer side of the bent portion bent in the crank shape on the second extended portion 52A. Further, as an example, a weather strip 26 (shown by a two-dot chain line in the drawing) is fixed to the second extending portion 52A on the front surface side of the vehicle width direction outer side portion thereof, and in the closed state of the slide door 40, the weather strip 26 is pressed against the rear surface of the pillar rear-side vertical wall portion 36R. In addition, the shape of the weather strip 26 in the drawing shows the shape of the weather strip 26 in a state where the slide door 40 is opened.

On the other hand, the second panel member 52 includes a flange portion 52B that extends so as to be bent from the vehicle width direction outer side end portion of the second extending portion 52A toward the vehicle front side. As shown in fig. 3, the flange portion 52B constitutes a lower portion of the front flange 49F. The upper end portion of the flange portion 52B is joined to the lower end portion at a portion of the first panel member 50 constituting the front side flange portion 49F. Further, the lower end portion of the flange portion 52B is joined to the end portion on the vehicle front side at the portion of the first panel member 50 constituting the lower side flange portion 49D.

Next, the operation of the above embodiment will be explained.

The vehicle interior side vertical wall portion 46 constituting the door inner surface of the door inner panel 44 made of an aluminum alloy is constituted by only the first panel member 50, and the extended wall portion 48 extending from the end portion of the vehicle interior side vertical wall portion 46 toward the door outer panel 42 (see fig. 2) is constituted such that the lower portion of the extended wall portion 48 on the vehicle front side is divided in the door thickness direction, and the first extended portion 50A of the first panel member 50 and the second extended portion 52A of the second panel member 52 are joined together in a state of being overlapped as shown in fig. 2. Therefore, even if the cabin interior vertical wall portion 46 is constituted only by the first panel member 50, the depth of extrusion of the first panel member 50 can be made shallow by extruding the first panel member 50 before joining the first panel member 50 and the second panel member 52. As a result, the angle θ of the bent portion 56 between the vehicle interior side vertical wall portion 46 and the extended wall portion 48 can be set to an angle equivalent to that in the case of the steel door inner panel.

As described above, according to the vehicle door structure of the present embodiment, the angle θ of the bent portion 56 between the vehicle interior side vertical wall portion 46 and the extended wall portion 48 of the aluminum alloy door inner panel 44 can be set to the same angle as that in the case of steel, so that the vehicle interior side vertical wall portion 46 of the door inner panel 44 can be configured by a single member (the first panel member 50) while the reduction of the rear door opening portion 22 (see fig. 1) of the vehicle side portion 10 is suppressed.

In the present embodiment, the door that opens and closes the rear door opening 22 shown in fig. 1 is a slide door 40 that opens the rear door opening 22 by moving toward the vehicle rear side. As shown in fig. 2 and 3, the joint portion 54 between the short extension portion 50S of the first extension portion 50A of the first panel member 50 and the second extension portion 52A of the second panel member 52 is set to the front-side vertical wall portion 48F that is disposed on the vehicle front side and extends in the door vertical direction, of the extension wall portion 48. Therefore, if the first panel member 50 is press-molded before the first panel member 50 and the second panel member 52 are joined, the angle θ of the bent portion 56 between the vehicle-interior-side vertical wall portion 46 and the front-side vertical wall portion 48F shown in fig. 2 can be set to an angle equivalent to that in the case of the steel door inner panel. Further, by setting the angle θ of the bent portion 56 between the cabin inner side vertical wall portion 46 and the front side vertical wall portion 48F to an angle equivalent to that in the case of a steel door inner panel and providing a vehicle front side vertical wall portion (a portion from the pillar rear side vertical wall portion 36R to the rear flange portion 16F) constituting the rear door opening 22 in correspondence with this, it is possible to reduce the difference between the amount of sliding movement LS in the vehicle front-rear direction of the slide door 40 and the length L in the vehicle front-rear direction from the vehicle front side edge portion of the rear door opening 22 to the vehicle front side end portion of the slide door 40 when the slide door 40 is slidably moved to the vehicle rear side and opened. That is, the opening amount of the getting on/off section can be effectively secured in the case of opening the slide door 40.

Note that the length L in the case where the slide door 40 is slidably moved toward the vehicle rear side and opened is obtained by a difference between the amount of sliding movement LS of the slide door 40 and the length LX in the vehicle front-rear direction from the vehicle front side end of the slide door 40 in the closed state to the rear end of the vehicle front side edge portion of the rear door opening 22. In addition, in the present embodiment, since the angle θ of the bent portion 56 between the cabin inner side vertical wall portion 46 and the front side vertical wall portion 48F shown in fig. 2 is set to an angle equivalent to that in the case of the steel door inner panel and the vertical wall portion on the vehicle front side (the portion from the pillar rear side vertical wall portion 36R to the rear flange portion 16F) constituting the rear door opening 22 is set in correspondence with this, the length LX in the vehicle front-rear direction from the end portion on the vehicle front side of the closed slide door 40 to the rear end of the edge portion on the vehicle front side of the rear door opening 22 can be suppressed. As described above, since the opening amount of the entrance/exit section can be effectively secured when the slide door 40 shown in fig. 1 is opened, the merchantability can be improved. The length L may be referred to as a sliding door opening.

In the present embodiment, the weather strip 24 is attached to the entire periphery of the outer peripheral edge of the rear door opening 22, and when the sliding door 40 closes the rear door opening 22, the weather strip 24 (see fig. 1 and 2) is pressed against the entire periphery (see two-dot chain line 46X) on the peripheral end side of the cabin inner side vertical wall portion 46 shown in fig. 3. Here, since the vehicle interior side vertical wall portion 46 is not a divided structure but is constituted only by the first panel member 50, when the sliding door 40 shown in fig. 1 closes the rear door opening 22, the gap between the weather strip 24 and the vehicle interior side vertical wall portion 46 shown in fig. 3 can be favorably suppressed over the entire circumference. As a result, for example, compared to a comparative structure in which the vehicle interior side vertical wall portion is divided, the NV performance (noise and vibration performance) can be improved.

Further, in the present embodiment, the short extended portion 50S shown in fig. 2 and the second extended portion 52A are joined together in a state of overlapping on the outer surface side of the second extended portion 52A (the front surface 52A1 side in the vehicle front-rear direction). On the other hand, in the present embodiment, when the vehicle longitudinal direction intermediate portion of the slide door 40 collides with a columnar object such as a utility pole or a tree, the vehicle longitudinal direction intermediate portion of the vehicle interior side vertical wall portion 46 of the first panel member 50 is pressed toward the vehicle interior side (vehicle width direction inner side). Thus, when the vehicle interior side vertical wall portion 46 of the first panel member 50 is intended to be deformed so as to be bent substantially in a V shape in a plan view of the vehicle, the short extending portion 50S of the first panel member 50 is intended to be displaced toward the vehicle interior side while pressing the second extending portion 52A of the second panel member 52. Therefore, when the vehicle front-rear direction intermediate portion of the slide door 40 collides with a columnar object, the joint portion 54 between the short extending portion 50S and the second extending portion 52A is less likely to peel off.

Further, in the present embodiment, since the short extending portion 50S and the second extending portion 52A are joined together in an overlapping state, the plate thickness of the overlapping portion that is joined together increases. Therefore, for example, the rigidity is improved against a load in the vehicle front-rear direction when the slide door 40 is closed.

Supplementary explanation of the embodiment

Although the above embodiment has been described with respect to the case where the door is the sliding door 40, for example, substantially the same structure as that of the door outer panel 42 and the door inner panel 44 of the above embodiment may be applied to the swing door.

In the above embodiment, the extended wall portion 48 shown in fig. 3 is configured such that the lower portion of the front-side vertical wall portion 48F is divided in the door thickness direction and the divided first extended portion 50A and the second extended portion 52A are joined in an overlapping state, but the extended wall portion may be a portion at least a portion of which is divided in the door thickness direction and the divided first extended portion and the second extended portion are joined in an overlapping state. The "at least part" may include a part constituting the rear-side longitudinal wall portion (48R), a part constituting the lower-side lateral wall portion (48D), and a part constituting the upper-side lateral wall portion (48U). As one example, the extended wall portion may have a structure in which the lower portion of the front-side vertical wall portion (48F) and the lower portion of the rear-side vertical wall portion (48R) are divided in the door thickness direction, and the divided first extended portion and second extended portion are joined together in an overlapping state. As another example, the entire extended wall portion may be divided in the door thickness direction, and the divided first extended portion and second extended portion may be joined together in an overlapping state.

Further, without changing the structure of the front-side vertical wall portion 48F of the door inner panel 44 of the above-described embodiment or dividing (integrally forming) the portion corresponding to the front-side vertical wall portion 48F of the door inner panel 44, a structure may be adopted in which the structure shown in fig. 2 is reversed front and back, that is, the second extending portion is provided on the vehicle front and rear direction rear end portion side of the extending wall portion and extends in the door up and down direction, and the first extending portion and the second extending portion are joined together in a state of being overlapped on the outer surface side of the second extending portion (the vehicle front and rear direction rear surface side).

Further, as a modification of the above embodiment, instead of the structure in which the weather strip 24 is attached to the entire circumference of the peripheral end edge of the rear door opening 22, a structure in which the weather strip is attached to the entire circumference of the peripheral end side of the vehicle interior side vertical wall portion (46) may be employed.

The above-described embodiment and the above-described modifications can be implemented by appropriate combinations.

Although an example of the present disclosure has been described above, the present disclosure is not limited to the above-described examples, and it goes without saying that various modifications can be made without departing from the scope of the present disclosure.

Claims

1. A door structure for a vehicle, comprising:

a door outer panel disposed on the outside of the vehicle compartment on a door that opens and closes a door opening on a side portion of the vehicle;

a door inner panel including a cabin inner vertical wall portion and an extension wall portion, the cabin inner longitudinal wall portion being arranged on the cabin inner side of the door outer panel and forming a main body portion of the door together with the door outer panel, In addition, the cabin inner vertical wall portion constitutes an inner surface of the door; the extension wall portion extends from an end portion of the cabin inner longitudinal wall portion toward the door outer panel side,

The door inner panel is made of aluminum alloy,

The cabin inner vertical wall portion is constituted by only the first panel member,

The extension wall portion is configured such that at least a part thereof is divided in the door thickness direction, and the first extension portion and the second extension portion are joined together in an overlapping state, wherein the first extension portion extends from the door. In the first panel member, an end portion of the interior longitudinal wall portion of the cabin is bent and extended toward the door outer panel side, and the second extension portion is formed by a second panel member independent of the first panel member. constituted and arranged on the side of the door outer panel in the at least one part,

In addition, the extension wall portion extends in the thickness direction of the door, and the front end portion in the extension direction is arranged in the vicinity of the door outer panel, and does not overlap with the first extension portion on the second extension portion. The length in the extending direction of the part is set to be longer than the length in the extending direction of the first extension part on the at least one part.

2. The vehicle door structure according to claim 1, wherein:

The door is a sliding door that opens the door opening by moving to the rear side of the vehicle,

The junction portion of the first extension portion and the second extension portion is set on a front side vertical wall portion of the extension wall portions, which is disposed on the vehicle front side and extends in the vertical direction of the door.

3. The vehicle door structure according to claim 2, wherein:

A weather strip is installed on the entire circumference of the peripheral edge of the door opening,

The vehicle door structure is set such that the weather strip is pressed against the entire circumference on the peripheral end portion side of the cabin inner vertical wall portion in a state where the sliding door closes the door opening.

4. The vehicle door structure according to any one of claims 1 to 3, wherein:

The second extension portion is provided on at least one end portion side of the extension wall portion in the front-rear direction of the vehicle and extends in the door vertical direction, and the first extension portion has a length relative to the second extension portion. It is joined to the outer surface side of the said 2nd extension part in the overlapping state.